1 files changed, 119 insertions, 0 deletions

diff --git a/arch/cris/kernel/ptrace.c b/arch/cris/kernel/ptrace.c
new file mode 100644
index 000000000000..e85a2fdd9acf
--- /dev/null
+++ b/arch/cris/kernel/ptrace.c
@@ -0,0 +1,119 @@
+/*
+ *  linux/arch/cris/kernel/ptrace.c
+ *
+ * Parts taken from the m68k port.
+ * 
+ * Copyright (c) 2000, 2001, 2002 Axis Communications AB
+ *
+ * Authors:   Bjorn Wesen
+ *
+ * $Log: ptrace.c,v $
+ * Revision 1.9  2003/07/04 12:56:11  tobiasa
+ * Moved arch-specific code to arch-specific files.
+ *
+ * Revision 1.8  2003/04/09 05:20:47  starvik
+ * Merge of Linux 2.5.67
+ *
+ * Revision 1.7  2002/11/27 08:42:34  starvik
+ * Argument to user_regs() is thread_info*
+ *
+ * Revision 1.6  2002/11/20 11:56:11  starvik
+ * Merge of Linux 2.5.48
+ *
+ * Revision 1.5  2002/11/18 07:41:19  starvik
+ * Removed warning
+ *
+ * Revision 1.4  2002/11/11 12:47:28  starvik
+ * SYSCALL_TRACE has been moved to thread flags
+ *
+ * Revision 1.3  2002/02/05 15:37:18  bjornw
+ * * Add do_notify_resume (replaces do_signal in the callchain)
+ * * syscall_trace is now do_syscall_trace
+ * * current->ptrace flag PT_TRACESYS -> PT_SYSCALLTRACE
+ * * Keep track of the current->work.syscall_trace counter
+ *
+ * Revision 1.2  2001/12/18 13:35:20  bjornw
+ * Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
+ *
+ * Revision 1.8  2001/11/12 18:26:21  pkj
+ * Fixed compiler warnings.
+ *
+ * Revision 1.7  2001/09/26 11:53:49  bjornw
+ * PTRACE_DETACH works more simple in 2.4.10
+ *
+ * Revision 1.6  2001/07/25 16:08:47  bjornw
+ * PTRACE_ATTACH bulk moved into arch-independent code in 2.4.7
+ *
+ * Revision 1.5  2001/03/26 14:24:28  orjanf
+ * * Changed loop condition.
+ * * Added comment documenting non-standard ptrace behaviour.
+ *
+ * Revision 1.4  2001/03/20 19:44:41  bjornw
+ * Use the user_regs macro instead of thread.esp0
+ *
+ * Revision 1.3  2000/12/18 23:45:25  bjornw
+ * Linux/CRIS first version
+ *
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+
+#include <asm/uaccess.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+
+/*
+ * Get contents of register REGNO in task TASK.
+ */
+inline long get_reg(struct task_struct *task, unsigned int regno)
+{
+        /* USP is a special case, it's not in the pt_regs struct but
+         * in the tasks thread struct
+         */
+
+        if (regno == PT_USP)
+                return task->thread.usp;
+        else if (regno < PT_MAX)
+                return ((unsigned long *)user_regs(task->thread_info))[regno];
+        else
+                return 0;
+}
+
+/*
+ * Write contents of register REGNO in task TASK.
+ */
+inline int put_reg(struct task_struct *task, unsigned int regno,
+                          unsigned long data)
+{
+        if (regno == PT_USP)
+                task->thread.usp = data;
+        else if (regno < PT_MAX)
+                ((unsigned long *)user_regs(task->thread_info))[regno] = data;
+        else
+                return -1;
+        return 0;
+}
+
+/* notification of userspace execution resumption
+ * - triggered by current->work.notify_resume
+ */
+extern int do_signal(int canrestart, sigset_t *oldset, struct pt_regs *regs);
+
+
+void do_notify_resume(int canrestart, sigset_t *oldset, struct pt_regs *regs, 
+                      __u32 thread_info_flags  )
+{
+        /* deal with pending signal delivery */
+        if (thread_info_flags & _TIF_SIGPENDING)
+                do_signal(canrestart,oldset,regs);
+}